Unlocking Bimetallic Active Centers via Heterostructure Engineering for Exceptional Phosphate Electrosorption: Internal Electric Field-Induced Electronic Structure Reconstruction

Environmental Science & Technology, Journal Year: 2023, Volume and Issue: 58(4), P. 2112 - 2122

Published: Dec. 26, 2023

Development of electrode materials exhibiting exceptional phosphate removal performance represents a promising strategy to mitigate eutrophication and meet ever-stricter stringent emission standards. Herein, we precisely designed novel LaCeOx heterostructure-decorated hierarchical carbon composite (L8C2PC) for high-efficiency electrosorption. This approach establishes an internal electric field within the heterostructure, where electrons transfer from Ce atoms neighboring La through superexchange interactions in La–O–Ce coordination units. The modulatory heterostructure endows positive shift d band sites increase electron density at Fermi level, promoting stronger orbital overlap binding interactions. introduction oxygen vacancies during situ nucleation process reduces kinetic barrier phosphate-ion migration supplies additional active centers. Moreover, framework ensures electrical double-layer capacitance storage interconnected ion channels. Such synergistically multiple centers grant L8C2PC with record As expected, demonstrates highest capability among reported saturation capacity 401.31 mg P g–1 dynamic 91.83 1.2 V. electrochemical system also performs well dephosphorization natural water samples low concentration that enable effluent first-class discharge standard China (0.5 L–1). study advances efficient techniques new level offers deep understanding regulates metal orbitals densities engineering.

Language: Английский

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Molecular level removal of antibiotic resistant bacteria and genes: A review of interfacial chemical in advanced oxidation processes

Water Research, Journal Year: 2024, Volume and Issue: 254, P. 121373 - 121373

Published: Feb. 23, 2024

Language: Английский

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Electronic structure modulation of iron sites with fluorine coordination enables ultra-effective H2O2 activation

Nature Communications, Journal Year: 2024, Volume and Issue: 15(1)

Published: March 12, 2024

Abstract Electronic structure modulation of active sites is critical important in Fenton catalysis as it offers a promising strategy for boosting H 2 O activation. However, efficient generation hydroxyl radicals (•OH) often limited to the unoptimized coordination environment sites. Herein, we report rational design and synthesis iron oxyfluoride (FeOF), whose strongly coordinate with most electronegative fluorine atoms characteristic moiety F-(Fe(III)O 3 )-F, effective activation potent •OH generation. Results demonstrate that plays pivotal role lowering local electron density optimizing electronic structures sites, thus facilitating rate-limiting adsorption subsequent peroxyl bond cleavage reactions. Consequently, FeOF exhibits significant pH-adaptive yield (~450 µM) high selectivity, which 1 ~ orders magnitude higher than state-of-the-art iron-based catalysts, leading excellent degradation activities against various organic pollutants at neutral condition. This work provides fundamental insights into function atomic level, may inspire sustainable environmental remediation.

Language: Английский

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Incorporation of edge-N into La-doped hierarchical carbon framework enables high-efficiency phosphate electrosorption: Boosting accessible active centers and bridging charge transfer paths

Chemical Engineering Journal, Journal Year: 2024, Volume and Issue: 481, P. 148518 - 148518

Published: Jan. 3, 2024

Language: Английский

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An efficient photo-Fenton In2O3@FeIn2S4 composite catalyst for tetracycline degradation

Chemical Engineering Journal, Journal Year: 2024, Volume and Issue: 491, P. 151549 - 151549

Published: April 22, 2024

Language: Английский

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Nano-island-encapsulated cobalt single-atom catalysts for breaking activity-stability trade-off in Fenton-like reactions

Nature Communications, Journal Year: 2025, Volume and Issue: 16(1)

Published: Jan. 2, 2025

Language: Английский

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Mechanochemical synthesis of biochar encapsulated FeMn nanoparticles with strong metal–carbon interactions for efficient degradation of tetracycline via activating peroxymonosulfate

Chemical Engineering Journal, Journal Year: 2023, Volume and Issue: 479, P. 147525 - 147525

Published: Nov. 30, 2023

Language: Английский

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Photo-Fenton degradation of tetracycline on nitrogen vacancy and potassium-doped Z-scheme FeOCl/NvCN heterojunction with low H2O2 consumption: Activity and mechanism

Journal of Alloys and Compounds, Journal Year: 2023, Volume and Issue: 970, P. 172532 - 172532

Published: Oct. 20, 2023

Language: Английский

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Efficient Hydrogen Peroxide Photosynthesis over CdS/COF for Water Disinfection: The S-Scheme Pathway, Oxygen Adsorption, and Reactor Design

ACS Sustainable Chemistry & Engineering, Journal Year: 2023, Volume and Issue: 11(49), P. 17552 - 17563

Published: Nov. 29, 2023

Solar-driven photocatalytic hydrogen peroxide (H2O2) production presents a promising avenue for achieving sustainable water disinfection. However, the development of robust and durable system practical applications remains notable unresolved challenge. Herein, star photocatalyst, covalent organic frameworks (COFs), was modified with CdS boosting environmentally benign H2O2 synthesis. Under simulated sunlight without sacrificial reagents, composite material exhibited capacity production, which attributable to establishment "step" (S)-scheme transfer pathway facilitation adequate oxygen diffusion. Nevertheless, it found that photocatalytically derived alone inefficient disinfection performance, whereas addition Fe(II) allowed rapid inactivation Escherichia coli, emphasizing pivotal importance integrating photocatalysis Fenton reactions within system. Furthermore, dual-compartment reactor, employing semipermeable membrane, devised spatially segregate photocatalysts from microorganisms. Such an operation mode enabled diffusion compartment microbial compartment, thereby "long-distance" sterilization manner simultaneous consummating recovery strategy photocatalysts. This study not only provides paradigmatic approach COF-based but also illuminates innovative technological option photocatalytic-based

Language: Английский

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Removal of Staphylococcus aureus using electro-fenton, UV/H2O2, and combination of electro-fenton and UV/H2O2 processes; optimization of operational parameters

Applied Water Science, Journal Year: 2024, Volume and Issue: 14(5)

Published: April 13, 2024

Abstract Staphylococcus aureus ( S. ) is an opportunistic pathogen of the gram-positive variety, known to cause a range severe infections including cellulitis, pneumonia, osteomyelitis, endocarditis, and sepsis. These are associated with significant morbidity mortality rates in both hospital community settings. Therefore, it important remove from aqueous solution. The present study employed response surface methodology as effective strategy optimize removal through electro-Fenton (EF), UV/H 2 O , combination EF-UV/H processes. Under optimized conditions, maximum efficiency EF process 48.5%, 36.2%, 100%. optimum condition for using 100% was attained at concentration 5 × 10 6 CFU mL −1 current density 8.0 mA cm −2 H dosage 170 µL L lamps UV during 7.0 min. Both production • OH additive oxidation effect main reasons better performance process. results indicate that highly promising environmentally sustainable method treating wastewater samples contaminated aureus.

Language: Английский

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